Why Sealcoating Is Important For Asphalt Parking Lots

Whether you own or manage a commercial or industrial property with asphalt parking lots and access driveways, seal coating is an integral part of your pavement maintenance routine.


It strengthens a paved surface by replenishing the degraded petroleum binder and blocking harmful elements and oxidizing substances that cause brittle pavement. It also helps the paving look brand-new. Visit to learn more.

Asphalt pavement needs protection to prevent damage from weather and environmental wear-and-tear. Seal coating is an economical way to protect your paved surface. It also helps to fill in cracks and repair potholes so you can avoid costly asphalt resurfacing and reconstruction.

A properly applied and maintained asphalt seal coat keeps a paved surface in good condition and adds curb appeal to your property. It protects the asphalt from damage caused by oxidation, water, oil and chemicals. Sealcoating also protects the underlying base from the pressure of automobile traffic, which causes it to degrade and weaken over time.

The best time to sealcoat a parking lot or driveway is spring, as the temperatures are ideal for the sealant to cure. The paved area must be free of debris, dirt and oils before the application of the seal coat, which can be done by spraying or using a squeegee. The process is quick and efficient, but it is important to hire a professional for the job. Workers should be trained on how to use the equipment and be aware of the dangers that can occur when working with coal tar, petroleum products and other toxic materials.

A seal coat restores that fresh black look to asphalt, preventing it from becoming washed out and grey. It also gives faded asphalt a new appearance and improves the overall quality of your pavement.

Prevents Water from Penetrating

Sealcoating creates a thick protective layer that acts as a shell to shield asphalt surfaces from harmful elements. It is especially effective against water penetration, which is a major cause of damage to asphalt pavements. Water can seep into untreated asphalt and cause cracks that widen over time. It can also soak into the base material and cause erosion. Sealcoating prevents this penetration by blocking existing channels.

While pavement deterioration is caused by many factors, one of the most common is the sun’s ultraviolet (UV) rays. The UV rays can dry out and harden asphalt pavements, leading to cracking and fading. Regular sealcoating can significantly reduce the speed of this process and prolong the life of your asphalt surface.

Aside from its beautiful dark black color that enhances the look of new and old asphalt, seal coating also helps hide smaller cracks and imperfections. However, larger cracks should be repaired before sealcoating.

Prevents UV Rays from Penetrating

Asphalt is an economical and durable material for parking lots, but it’s not impervious to damage. The sun’s UV rays can cause oxidation in asphalt surfaces, which leads to brittleness and cracking. Sealcoating acts as a barrier to protect the asphalt surface from harmful UV rays and other environmental factors.

The ultraviolet rays in sunlight combine with oxygen to break down the asphalt’s binding chemicals. This deterioration wears away the surface of the asphalt and weakens the sub base beneath it. A regular application of a sealcoat prevents this from happening, as the sealant blocks out harmful UV rays and keeps the asphalt flexible.

When an asphalt parking lot or driveway is not sealed, the voids and cracks in the surface allow water, oil, gas and other chemicals to penetrate into the pavement and cause damage. Sealcoating forms a layer that seals off the voids and cracks in the pavement, reducing moisture penetration. This reduces the likelihood of cracking and deterioration caused by freezing and thawing during winter months.

Sealcoating also helps protect your parking lot or driveway from vehicle fluid leaks, which can etch and stain the asphalt. The coal tar emulsion in the sealer naturally resists oil and gasoline spills, and will minimize the amount of damage these leaks can do to your pavement. This is a cost-effective way to extend the life of your asphalt and improve its appearance.

Prevents Oil and Grease from Penetrating

Sealcoating protects your asphalt pavement from oil, grease and chemical spills. These liquids will slowly eat away at the asphalt, but they won’t be able to penetrate the protective layer of the sealcoat. This prevents them from damaging the underlying concrete or causing any sort of staining to the paved area.

Coal tar emulsion sealcoats are also effective at stopping oil, jet fuel and chemicals from seeping into the underlying asphalt surface. They will keep these types of chemicals from corroding the concrete and they’ll also help to restore the dark appearance that’s often lost over time.

Additives – Adding the right additives to your sealcoating mix is important as they boost specific properties like cold temperature flexibility, toughness, adhesion, fuel and chemical resistance etc. The use of too much water or sand in the mix can significantly reduce these properties and compromise the performance and durability of the sealcoat.

The addition of an additive based on acrylonitrile/butadiene (NBR) polymers will rubberize the sealcoating and improve its overall resistance to oil, fats, grease, de-icing salts, hydraulic fluids, aromatic fuels etc. It will also help to improve the tensile strength, reduce power steering marks and scuffing as well as speed up drying time.

These types of additives are ideal for use in parking lots and other high traffic areas. They will also stop the deterioration of aged aggregate and provide it with a more durable and uniform appearance.

Prevents Chemicals from Penetrating

While it might not be in the spotlight, seal coating is a key element of safe roads. It’s like bestowing the road with a shield that guards it from various forms of damage. Without it, roads are more susceptible to cracks and deterioration, which in turn lead to unsafe travels and costly repair jobs. With it, roads remain comfortable and secure for years to come.

Asphalt surfaces are constantly exposed to chemical spills and fluids from cars, including oil, transmission fluid, antifreeze, brake fluid, and other chemicals. These corrosive substances can soften and break down asphalt, making it impossible for the road to support the weight of vehicles. With sealcoating, these chemical substances are prevented from penetrating the asphalt surface.

The seal coat is made from a special blend of refined coal tar emulsions and fillers. The mix also contains additives to improve its performance, such as speed of drying, altering sand suspension, improving water repellency, increasing flexibility, and adding resistance to salts and other chemicals. The mixture is then applied evenly to the asphalt surface using brush applicators, spray applicators, or hand squeegees. It is then smoothed and leveled to ensure that the seal coat is distributed evenly across the asphalt surface.

Prevents Frozen Roadways

Asphalt is susceptible to water damage if it’s not sealed. Moisture can seep into small cracks and then freeze when it gets cold. This cycle of freezing and thawing stresses the asphalt, making it more vulnerable to damage. Sealcoating prevents moisture from entering the cracks, preventing them from becoming bigger problems down the road.

Sealcoating also prevents the damage that can be caused by salts and de-icing chemicals. These materials eat away at the surface of a driveway or parking lot, and if they are not removed promptly, they can cause potholes that will be expensive to repair. By forming a protective barrier, seal coating protects the asphalt from these harmful substances and helps keep it strong and stable.

A well-maintained asphalt driveway or parking lot adds value to your home, and it also makes the property more appealing for potential buyers or tenants. By having your asphalt seal coated regularly, you can ensure that it will last longer and look better.

To get the best results from your asphalt sealcoating project, it’s important to choose a professional company that uses quality products. The right equipment can make the difference between a good job and a bad one. The right equipment should include an oil sprayer used mainly for filling smaller cracks in the asphalt and a hot-pour crack filler that melts and reseals the asphalt. It’s also important to use a hose that has enough pressure for the project at hand.


Paving and Soil Compaction

Paving Philadelphia is an essential part of keeping your home or business looking its best. A well-paved driveway, walkway, or pathway not only looks great but also helps prevent damage and wear over time.


The paving process involves five key steps to bring the plan to life. This includes demolition and removal of existing surfaces, grading and sloping that allows water to flow off the surface, preparing the sub-base layer, adding the binder layer, and finally installing the asphalt pavement.

Suitable pre-drying is essential to ensure high-quality products and maintain product characteristics. The moisture content of raw materials at harvest time, weather conditions and threshing/shelling systems and machines must be considered to establish the duration and kind of drying process. Insufficient pre-drying can lead to a reduction in the fluidity of the pellets and result in molding defects. DURANEX(r) PBT is hydrolysed by excess moisture and therefore, it requires a sufficiently long pre-drying to obtain good mechanical properties. The logarithmic model fitted best to celeriac slices drying kinetics and the optimum solution was found to be 58 degC drying temperature, 2.9 m/s air velocity, 4.6 mm sample thickness with acid pre-drying treatment.


Soil compaction involves mechanical energy to rearrange soil particles to reduce the void ratio and increase the soil density. It is a key step in construction as it creates a solid foundation for buildings, roads and runways. When performed improperly, however, it can lead to structural failure and unnecessary maintenance costs. This is why it is important to specify the correct amount of compaction and to conduct quality control on site.

Soils are compacted with heavy equipment like rollers, plate compactors, rammers and dozers to prepare them for the construction of foundations, sidewalks and trench work. The best time to perform compaction is when the soil has a high water content, or what is known as optimum moisture content (OMC). The goal is to achieve maximum dry unit weight for the soil with OMC. This can be achieved by using several compaction tests, including sand cone testing and the use of a Shelby Tube or balloon densometer.

When it comes to building concrete, asphalt or gravel roads, pre-compaction helps make them last longer. It also reduces the likelihood of settlement after a road is built, which can cause costly repairs and downtime. Compaction of the soil also prevents plants from growing in the area, which can destabilize the soil over time. In addition, it allows the roads to form in a way that facilitates shedding water.

On a construction project, the amount of compaction required is determined by the size and thickness of the pavement being laid. For thicker mats, more passes are needed, which requires a larger machine with more power and a greater tamping force. To save money and improve productivity, contractors can utilize a plate compactor with an adjustable frequency to regulate the speed at which it travels. This will ensure the compaction process is carried out at a steady rate and that all of the material is compressed evenly.

For smaller jobs, a front-extending screed is used for the paving phase. This is a more efficient alternative to rear-extending screeds as it doesn’t require the operator to manually retract or extend the head of mix when changing paving widths. This means more time can be spent on ensuring the mat is dense and that all of the material is tamped down, which makes for a stronger finish.


Soil compaction densifies loose soil, eliminating voids between soil particles and increasing its dry unit weight. It is a key component of construction projects that require a stable base for foundations, roads and other structures. Soil that isn’t compacted properly can be unstable and cause problems down the line, such as undesirable settling of pavement and underground pipes.

A good understanding of how soils are compacted can help project managers make smart decisions about the best equipment and process for each job. It also helps to understand the effects of different conditions on the final outcome of the process. For example, very dry soils can be difficult to compact because the friction between particles makes it difficult to squeeze them together. Conversely, wet soils are more difficult to compact because the water in the pores creates resistance and can prevent forming a dense structure. This is why choosing the right equipment for each type of soil is so important – using the right machine for each situation can dramatically improve the final compaction result.

Once the desired level of compaction is achieved, the resulting material can be used for a variety of purposes. For instance, it can be used in place of gravel to build roads. This helps reduce the cost of the road, as well as the amount of time and effort needed to install it. It also provides a firmer base for small stones than loose gravel would, which in turn can help the roadway last longer. In addition, soil compaction is an important part of building concrete and asphalt roads because it stops plants from growing in the roadway area and destabilizing the surface over time. It is also often used to prepare areas for lawns and golf courses, as it provides a better surface on which to lay greens that can withstand foot traffic.

When it comes to pavement, proper compaction is essential for ensuring that the materials in the construction are tightly locked together. This is what gives the finished product its strength and durability, and it can help to prevent a variety of common road damage problems, such as potholes, cracking and rutting.